Gas-regulating valve



J. H. SMITH 1,712,313

GAS REGULATING VALVE May 7, 1929.

Filed- Aug. l, 1927 EE /3 /6 /5 /6 /4 /z 'HHH as "wma JZJJZYWZZI/ awww,

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lltotented May Y, laid-J.

Application filed August 1,

rlhis invention relates to regulating valves especially designed for use in regulatingthe :tloiv ot Lgas to a burner to insure oneven teinperatui'e at all tiines. A

itin important olii-.ject oit the invention is to provide a valve ot this type which is autoniatio in its operation and one which iiiay be readily adjusted to vary the voluine ot gas passino' through the valve.

li .l further object ot the invention is to provide a valve ot this type wherein a length ot carbon is used inthe expansible inateria-l, novel incaiis being provided 'for connecting the valve and carbon to perinit oit adj ustiiient ot the valve with respect to the carbon.

With the 'foregoing and other objectsin view which will appear as the description proceeds, the invention resides iii the c oinbination and arrangement of parts and in the details et construction hereinafter described and claimed, it beingunderstood that changes in the precise embodiment ot the invention herein disclosed, inay be niade Within the scope et what is claiined, Without departingtroni the spirit ot' the invention.

lheierringv to the drawing: v

Figure 1 is a longitudinal sectional vieiv through a valve constructed in accordance with the invention. j

Figure 2 is a sectional @H2 of Figure 1.

Figure 3 is a sectional view taken on line SW3 oit' Figure 1. I

liigurc 4C is a perspective vieiv ot the adjusting` nieinber. .i i

ldci'erring to the drawing in detail, thc rc1'- erence chai-acte 5 indicates the body portion olf the valve which is fornied with internal threads disposed at its ends Afor the reception oit the pipes 6 and i' i'esjvieetively..

rlhe body portion is lorined with a bore having` a right an fled innern extremity 8 against which the vu ve 9 seats in controlling` the passage ot gas through the valve body.

This vulve 9 is inounted at one end o1? the arin l() `which is pivotally supported Within the valve body as at 11, the ariii having,v a head adjacent; to the pivot point thereof, which head seats in the groove 13 iorined in the ad4 view taken on line instable end nieniber 1d, the groove having` curveo surfaces corresponding tothe shape olf the head 12 so that the head inay inove Within the groove to accomplish the nievenient ot' the arni 10. l

HARLEY EaMI'll-t, GF GLENDALE, CALIFORNIA.

rATENT OFFICE.

1927. Serial No. 209,665.

The adjustable end nieinber 14C is formed with a thrcadedbore to receive the' threaded shank 15 that has a head 16 at its outer end, the head bearing against one end of the bar 16, which is preferably 'forined of carbon inaterial. This bai' 16 is positioned in the tube 17 that in turn is positioned in the union 18 that screws into an openingr formed in one side olf the valve body, the union 18 being vhowever provided with external threads 19 so that `the device may be positioned in a threaded opening,l of a furnace Wall, broeder or the like, or iii suoli position that the tube 17 will be subjected to the heat of the oven or heating chamber in which the union is positioned.

The inner end of the union 18 is provided with a notch 20 into which the head 16 extends to hold the head and shank against rotation When the member 14C is being,` adjusted.

ln order that the bar 16 may be removed, and replaced, a plug 2O is provided at one end of the copper tube 17, which plug may be removed, allowing access to the bar 16. The adjustable end incinber 14 is provided with a groove to receive a screw driver or siinilar instrument whereby the end member inay be rotated With respect to the threaded shank 15 to adjust the arin 10 to cause the valve 9 to be held in predetermined spaced relation. with the valve seat formed at the end of the bore 8. j

Contactingwith thc end member 14 is a coiled spring,` 21 which is itted within the cap 22 so that the springv will hold the end inember under tension at all tiines and insure a close contact between the bar 16 and head 16.

A threaded plugindicated at 23 closes an opening disposed adjacent to the valve 9 so that access inay be-had to the valve 9 should it be desired to replace or repair the saine.

j ln the use oill the device it will be seen that with the valve 9 set in a lnaiiiier as shown by Figure 1, iras will pass through the pipes 6 and 7 to a burner heating' an oven or heat chamber ot a broeder, iii which thev tube 17 and bar 16 are positioned..

lt is obvious that as the teinpe 'ature rises in the oven or heatingl chamber, the tube 1i' which is constructed ol' copper and havingr a greater coeificiency oi' expansion than the carbon bar 16 Will expand, lengthening `the tube, whereupon the spring 21 will act to nieve the carbon bar 16 in the direction of Yio posite direction to movethe arm 10 causing the valve 9 tok be unseated to admit more gas to the valve body and to the burner supplied with Ygas through the valve body.

I claim: In a thermostatically v controlled valve, a

'valve housing through which gas passes, an

arm pivotally mounted in the valve housing,

Y a valve Vmember onv one end of the arm for controlling the passage of gas through the valve housing, Vsaid valvehousing having lateral openings, a union positioned in one of the openings, a tube extending into the union, a bar fitted in the tube and adapted to more upon expansion and contraction of the tube, said union having a notch formed in one end thereof, a threaded member having a head fitted in the recess, and engaging one end of the bar, an adjustable member connected withthe threaded member to be moved by the movement of the bar, a coiled spring for normally urging the adjustable member in one direction and said valve carrying arm having connection with the adjustable member to move the arm and valve.

In testimony that I claim the foregoing as my own, I have hereto affixed my .si mature.

JAY HARLEY Sh I'IH. 

